Tamron 17-50mm F2.8 problem... soft!!

[blurboiboi]

Hi, anyone who owns this lens has a problem with it??...
I recently jumped boat from KM.... using a 350D now... this is the only lens I have and had bought it late last month...
I did not have the time to play around with it until yesterday when i went to RSAF open house.... I realise the images are very soft even after I added sharpness using the camera settings... I did some test shots at home.... results are still the same....
anyone has similar experience... not sure whether is it becos of the camera settings cos I am still new to canon DSLR.... I was using the KM 17-35 previously and I must say it was SHARP!...
wonder could it be a defective lens.... anyone sent in a Tamron lens for exchange or service b4??...

[majere2sg]

Sample photos ?
What are the shutter speed of those photos ?
Maybe you not get used without anti-shake ?
Sad to hear that the 17-50mm is soft.. although I haven't owned it yet.

[sumball]

Agree with Vernon that post a photo to show us how"soft" is your photo then the people here is able to tell you what's the prob is.

Originally Posted by majere2sg Sad to hear that the 17-50mm is soft.. although I haven't owned it yet.

Owning a Tamron lens? Will you....?

[blurboiboi]

pics... maybe you guys are right.. i might not be used to no IS...
all shot using AV mode... tripod mounted using cable release... WB, tungsten
wonder is it a good test or not....


F5.6



F4.0



F2.8

[zcf]

may be can do front/back focus test shots? The F/5.6 one seem sharp, f/2.8 seem quite soft to me.

[+evenstar]

i wonder what happened to the man utd shirt at f5.6??? the SHARP and UMBRO looks blurred while the rest of the shirt looks ok

[rokieto]

which focal length were the pics shot?

From the link below, the MTF table show that :
at 17mm, the edge is sharper then centre at f2.8 & f4.....
at 35mm, centre & edge consistent at f2.8, but at f4 onwards, edge sharpness drops...

http://www.ephotozine.com/equipment/...fm?test_id=472

[Isaiahfortythirtyone]

i think u got a defective copy. u shd send for servicing at Tithes.

[blurboiboi]

Originally Posted by Isaiahfortythirtyone i think u got a defective copy. u shd send for servicing at Tithes.

where is tithes??.. i think i got a defective copy... .. is it common for lens??.. so far my KM lens no prob.... sigh... first canon (3rd party though) then got problem already...

will pop by my friend's place later to double confirm... he using the same lens as me.... sigh once again...

[Isaiahfortythirtyone]

search yellowpages.com.sg for tithes marketing. my tamron 28-75 had a problem too. had to send for servicing. took one month but came back super sharp

[blurboiboi]

Originally Posted by Isaiahfortythirtyone search yellowpages.com.sg for tithes marketing. my tamron 28-75 had a problem too. had to send for servicing. took one month but came back super sharp

oh my god.... 1 month?!?!?...
guess i have no choice... got extend your warranty by another month or not?.. :P

[Isaiahfortythirtyone]

PM replied. no la no extension. it's 3 year warranty anyway but the lens has been absolutely fantastic ever since. at f/4, it's very sharp at 28mm and 75mm. 2.8 is veyr usable

[thw]

Originally Posted by Isaiahfortythirtyone search yellowpages.com.sg for tithes marketing. my tamron 28-75 had a problem too. had to send for servicing. took one month but came back super sharp

Can you elaborate what exactly is the problem on your 28-75 f/2.8 lens?

I am very keen on getting another one. I had focusing issues in the past, especially at far off objects. I ended up returning the lens (in Canada).

BTW, what camera are you using? The 300D/10D/350D all use terrible AF sensors.

[canturn]

Originally Posted by +evenstar i wonder what happened to the man utd shirt at f5.6??? the SHARP and UMBRO looks blurred while the rest of the shirt looks ok

Sometimes it could be a problem with the mis-alignment of lenses...think tilt-shift lenses or lens-baby...

[PnS]

Mine is sharp even at 2.8, however, i spent alot of time testing multiple copies at the shop, the guy at TK was helpful, he even blew off a dust on my sensor.

[blurboiboi]

Originally Posted by PnS Mine is sharp even at 2.8, however, i spent alot of time testing multiple copies at the shop, the guy at TK was helpful, he even blew off a dust on my sensor.

i think prob mine is not a very good copy.... its alright at 5.6... and when wider at 4 or 2.8... its damn soft.... is it servicable??... as in can it be repaired?

wats len baby and tilt btw??

[Isaiahfortythirtyone]

Originally Posted by thw Can you elaborate what exactly is the problem on your 28-75 f/2.8 lens? I am very keen on getting another one. I had focusing issues in the past, especially at far off objects. I ended up returning the lens (in Canada). BTW, what camera are you using? The 300D/10D/350D all use terrible AF sensors.

im using a 350D. my tamron 28-75 had an intermittent soft picture problem. sometimes it would be sharp at f/4 and above and soft at 2.8. sometimes it would be sharp at f/2.8 only and no other aperture would increase sharpness. it's not my AF sensors. ive been learning how to make use of the sensors properly and i think it has helped so far

[blurboiboi]

Originally Posted by Isaiahfortythirtyone im using a 350D. my tamron 28-75 had an intermittent soft picture problem. sometimes it would be sharp at f/4 and above and soft at 2.8. sometimes it would be sharp at f/2.8 only and no other aperture would increase sharpness. it's not my AF sensors. ive been learning how to make use of the sensors properly and i think it has helped so far

probably you should send it in for servicing... i think my problem is pretty similar to yours...

[PnS]

Originally Posted by Isaiahfortythirtyone im using a 350D. my tamron 28-75 had an intermittent soft picture problem. sometimes it would be sharp at f/4 and above and soft at 2.8. sometimes it would be sharp at f/2.8 only and no other aperture would increase sharpness. it's not my AF sensors. ive been learning how to make use of the sensors properly and i think it has helped so far

Phew, I must be very lucky then, i also have the 28-75 and it's still one of my favourite lens as its very sharp at f2.8. But then again, i did extensive testing when buying as well...

[NightZ88]

Originally Posted by PnS Mine is sharp even at 2.8, however, i spent alot of time testing multiple copies at the shop, the guy at TK was helpful, he even blew off a dust on my sensor.

how did u do testin at e shop?